Features & Capabilities
Everything you need to write, compile, and run code online — built for speed, simplicity, and learning.
⚡ Core Features
Ultra-Fast Execution
Code compiles and runs in isolated Docker containers in under 2 seconds on average — no queues, no local setup.
Monaco Code Editor
The same editor engine that powers VS Code — syntax highlighting, auto-indentation, and professional keyboard shortcuts.
10 Languages Supported
Python, Java, JavaScript, C, C++, C#, Go, Rust, PHP, and Ruby — switch languages instantly with one click.
Interactive stdin
Test programs that read user input — supports Python input(), Java Scanner, C scanf, and more via the terminal panel.
Responsive Design
Works on desktop, tablet, and mobile. Code from anywhere with a modern browser — no app install required.
Customizable Layout
Drag to resize editor and terminal panels, swap sides, or maximize either panel to full screen.
🛠️ Editor Capabilities
- Syntax Highlighting: Language-aware coloring for all 10 supported languages.
- Auto-Save: Your code is saved to browser localStorage — never lost on refresh.
- Dark & Light Themes: Switch themes instantly; preference is remembered.
- Privacy: Code drafts stay on your device. Server-side execution is stateless.
🛡️ Secure Docker Sandbox
All code runs in isolated containers with strict security controls:
- Container Isolation: Each run gets a fresh, isolated environment.
- Execution Timeout: Programs are stopped after a time limit to prevent infinite loops.
- HTTPS Encryption: All data transmitted between your browser and our servers is encrypted.
- Full Output: Both stdout (program output) and stderr (errors) are captured and displayed.
🚀 How to Get Started
Choose Language
Pick from 10 languages on the homepage or compiler dropdown.
Write Code
Type or paste code in the Monaco editor with syntax highlighting.
Add Input
Type stdin in the terminal if your program reads user input.
Run & Learn
Click Run Code and read the tutorial guide below the editor.